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Best check validation plugins for WordPress

The most popular check validation plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. W3C validation auto check leads with 60+ active installs. All 1 plugins tagged “check validation” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 1 check validation plugins

  1. 1.
    W3C validation auto check

    The most installed check validation plugin, with 60+ active installs. Only 1 review so far, last updated 14 years ago. Tested only up to WordPress 3.3.2.

All 1 plugins tagged “check validation”